For the best content on current affairs, you need to read Manorama of the year as it covers major events that has occured in the particular year. Keep reading newspapers and magazines specially fashion based magazines.
Sport topics like Olympics, various awards and medals earned by different personalities. Political topics mostly general knowledge type of questions. Major awards like Padmashree winning personality names.
These are the topics in brief. Please refer to previous years sample papers to get a hold of what kind of questions are asked in the current affairs section. But please keep yourself updated with new and articles.
For better learning, refer to the following article: https://design.careers360.com/articles/important-topics-for-nift-preparation
Good luck and stay safe!